Six years ago, the phenomenon known as "Goblin Night" gave 1 out of every 100 people the ability to transform into a monster, which came... more>> to be called a "goblin." As neither the government nor the police could oppose or keep up with them, some goblins committed evil acts with their power and caused society to crumble. In present-day Japan, Mamoru and Yuki, who possess the "goblin" ability, strive to protect their town - though the events that took place on Goblin Night, which resulted in the death of his brother, left Mamoru disinclined to trust or care about other people. And things only get worse when his brother's killer comes to town... <<less

Tsubasa Teppei, a young boy, wakes up in the middle of the street to discover that the world has gone to hell, with no memories... more>> after he had gone to school earlier that day. A strange epidemic appeared that transformed many humans into mindless monsters called Goblins. Some of these Goblins have retained their human minds, but not their human morality. It seems that Teppei may not necessarily be normal either. Does he have what it takes to protect the people that he cares about? <<less

Technology has advanced due to the discovery of an alternative source of fuel called "Thunder-Cores." This has changed civilization for the better due to the creation of longer lasting trains and cars, and a new form of transportation called Air-Ships!... more>>

The story follows Tatsu Frampt, a young boy who lives in an orphanage nowhere near the city, who dreams that one day he will be the captain of his own air-ship and travel around the world alongside his friends. He is told that he and his friends are being isolated from civilization due to a disease that makes iron grow in their bodies. However, the orphanage is attacked, and Tatsu is the sole survivor, and learns the dark truth of his "disease." Six years later, he embarks on a mission to save his friends, and kill those who stand in his way... <<less